// Copyright 2017 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
description: >
  Test the groups object on RegExp subclass results that do not have their own.
esid: sec-regexpbuiltinexec
features: [regexp-named-groups]
info: |
  Runtime Semantics: RegExpBuiltinExec ( R, S )
    24. If _R_ contains any |GroupName|, then
      a. Let _groups_ be ObjectCreate(*null*).
    25. Else,
      a. Let _groups_ be *undefined*.
    26. Perform ! CreateDataProperty(_A_, `"groups"`, _groups_).
---*/

function Test() {
    class FakeRegExp extends RegExp {
      exec(subject) {
        const fakeResult = ["ab", "a"];
        fakeResult.index = 0;
        // `groups` is not set, triggering prototype lookup.
        return fakeResult;
      }
    };

    const re = new FakeRegExp();
    const result = re.exec("ab");
    assert.sameValue(Object.getPrototypeOf(result), Array.prototype);
    assert.sameValue(false, result.hasOwnProperty("groups"));

    Array.prototype.groups = { a: "b" };
    Object.getPrototypeOf(Array.prototype.groups).b = "c";
    assert.sameValue("b", "ab".replace(re, "$<a>"));
    assert.sameValue("c", "ab".replace(re, "$<b>"));
    Array.prototype.groups = undefined;
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
